Home / 87,256.10-130,904.66-28,089.56

Finding the Fourth Proportional to 87,256.10, 130,904.66 and 28,089.56

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Solution

The fourth proportional to 87,256.10, 130,904.66 and 28,089.56 is: 42,140.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,256.10 : 130,904.66 = 28,089.56 : x
  2. Step 2: Convert to fraction form
    87,256.10/130,904.66 = 28,089.56/x
  3. Step 3: Cross multiply
    87,256.10x = 130,904.66 × 28,089.56
  4. Step 4: Simplify right side
    87,256.10x = 3,677,053,506.38
  5. Step 5: Solve for x
    x = 3,677,053,506.38/87,256.10
  6. Step 6: Final answer
    x = 42,140.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.